I live in California and I have a real estate business.  In the office, my clients and staff go in and out of the main door at irritating frequency.  There’s really no problem with that except for the fact that we have a small office and my desk is very near the door.  It’s thus only irritating.Glad that we found a solution by installing door closer.  A door closer is a mechanical device, manual or automatic, that closes a door, in general after someone opens it, or after it was automatically opened.  With door closer, we already have reliable control over the access and traffic of the main door in the office.There are three leading names for door closers: LCN, Norton and Cal-Royal.  These brands allow you to choose the specifications needed to manage the traffic of the door that you are controlling.  We opted for a Cal-Royal.  An important thing to consider when purchasing door closers is the amount of anticipated traffic expected for the door. Normally, closers are labeled as to how much traffic they are designed to endure before needing a new one.  So it’s also nice if you buy a sizable closer.